Clematis plant named `Evitwo`

ABSTRACT

A White clematis characterized by: an outstanding flowering habit, producing many flowers on one stem; clear, white color; few green outer tepals; a longer flowering period than `Duchess of Edinburgh`; and lasting longer as a cut flower than `Duchess of Edinburgh.`

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct variety of clematisplant known by the cultivar name `Evitwo,` and formerly known under thebreeder's reference name of Artic Queen. It was discovered as a chanceseedling of unknown parentage in a cultivated area at St. Sampson'sParish, Guernsey, Channel Islands, Great Britain.

There are a number of varieties of white clematis of which the nearestto `Evitwo` is believed to be the variety `Duchess of Edinburgh.` Thefollowing unique combination of characteristics that are outstanding in`Evitwo` have been repeatedly observed in asexually propagated progenyand distinguish it from `Duchess of Edinburgh` and from all othervarieties of which I am aware:

1. An outstanding flowering habit, producing many flowers on one stem;

2. A clear, white color;

3. Few green outer tepals;

4. A longer flowering period than `Duchess of Edinburgh`; and

5. Lasting longer as a cut flower than `Duchess of Edinburgh.`

This variety has not been observed under all possible environmentalconditions. The phenotype of clematis plants can vary significantly withvariations in environment such as temperature, light intensity, daylength, and soil condition. The following observations, measurements andcomparisons describe plants grown under growing conditions that aresimilar to those generally used in commercial practice.

Asexual reproduction of this new variety was by vegetative cuttings asperformed at Guernsey, Channel Islands, Great Britain, and showed thatthe foregoing characteristics are established and transmitted throughsucceeding asexual propagations.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show typical specimens of the foliage andflowers of this new variety, depicted in color as nearly true as it isreasonably possible to make the same in a color photograph of thischaracter. The photographs were taken in June 1994 at a nursery locatedin St. Sampsons' Parish, Guernsey, Channel Islands, Great Britain.

Sheet 1 is a view of a cluster of flowers on a plant of `Evitwo.`

Sheet 2 is a view of a single autumn flower of `Evitwo` showing thetepal arrangement.

Sheet 3 is a view of flower buds of `Evitwo.`

Sheet 4 is a rear view of a single flower of `Evitwo.`

Sheet 5 is a view of leaves of `Evitwo.`

Sheet 6 is a view of flowers on a plant of `Duchess of Edinburgh`showing the greater quantity of green outer tepals of this variety.

The following is a detailed description of my new clematis cultivargrown under glass at a nursery in St. Sampsons' Parish, Guernsey,Channel Islands, Great Britain, throughout the flowering period. Thecolor descriptions used herein employ terminology in accordance with TheRoyal Horticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Classification:

Botanical.--Clematis cv. Evitwo.

Commercial.--Clematis.

Parentage:

Seed parent.--Unknown.

Pollen parent.--Unknown.

Plant:

Form.--Upright climbing or spreading.

Growth.--Medium growth. Height attained (First season): 2.5 m.

Foliage.--Deciduous, normally compact--tri-foliate, sometimes simple.Size: Medium. Quantity: Average. Color: New foliage: Upper side: LightGreen (R.H.S. 137D). Underside: Light Green (R.H.S. 137C). Old foliage:Upper side: Green (R.H.S. 137A). Underside: Light green (R.H.S. 137C).Shape: Normally three ovate/cordate leaflets in pinnate form, sometimessimple. Texture: Upper Side: Glabrous. Underside: Ribbed and hairy.Edge: Normal. Serration: None. Petiole color: Top surface: Green.Underside: Green. Stipules: None. Internodes: Shape: Cylindrical.Length: About 12 cm to about 17 cm. Resistance to disease: Subject toany disease that normally affects clematis, but less prone to mildewthan some clematis.

Wood.--New Shoots: Color: Light green. Bark: Smooth; light white hairs.Old Wood: Color: Light brown. Bark: Rough.

Hardiness.--Zone 4-9.

Flower:

Blooming habit.--Recurrent.

Bud.--Size: About 4 cm to about 5 cm length; about 2 cm to about 3 cmwidth. Form: Ovate. Color: Green/grey, hairy. Sepals: None (tepalsonly). Peduncle: Length: About 5 cm to about 10 cm. Aspect: Vertical.Strength: Erect. Color: Green (R.H.S. 143C). Bracts: None; outer tepalsoccasionally green.

Bloom:--Average size when fully open: About 10 cm to about 18 cm. Borne:Singly, but 5 to 7 flowers per flowering stem. Form: Double; outertepals open to become flat; inner tepals remain ruffled. Number oftepals: Minimum of 12. Color: Outer tepals: Top surface: White (R.H.S.155C). Undersurface: White (R.H.S. 155C with green mid rib. Innertepals: Top surface: White (R.H.S. 155C). Undersurface: White (R.H.S.155C). Base of tepals: White/green. General tonality from a Distance:White. Color change: As bloom ages, colors remain similar; may darkenslightly to become creamy-white when very old. General Tonality at adistance: White.

Tepals.--Texture: Medium. Appearance: Inside: Satin. Outside: Matt.Form: Obovate. Arrangement: Regularly arranged in `double` form.Petaloids in center: Occasionally. Persistence: Persistent. Fragrance:Slight. Lasting quality: Two weeks on plant, lasting longer than usualas a cut flower, typically 5 days.

Reproductive organs:

Stamens, filaments and anthers.--Arrangement: Regularly arranged. Color:Stamens: White base, yellow tip. Filaments: White. Anthers: Yellow.

Pollen.13 Color: White to light cream.

Styles.--Bunched, even, average length.

Stigmas.--Color: White.

Hips.--None (but produces seed heads).

I claim:
 1. A new and distinct variety of clematis plant named `Evitwo`as herein shown and described.